Poltergeist? Interesting. Jack thought those were all mischievious Aethers out for a prank. But he certainly didn't know anything, as demonstrated by his interaction with that other man.

"I don't know," he said, responding to Susie. "It's a nice place, though. Full of..." There wasn't a word in English. "...experiences." And baby Aethers. Perhaps he'd go over and play with them for a bit, take one or two home to see Charlotte. She would love them. She would love this whole place.